Exploit/Advisories

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Ubuntu Security Notice USN-6018-1
April 13, 2023

apport vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Apport could be used to escalate privilege on specially configured
systems.

Software Description:
- apport: automatically generate crash reports for debugging

Details:

Chen Lu, Lei Wang, and YiQi Sun discovered a privilege escalation
vulnerability in apport-cli when viewing crash reports and unprivileged
users are allowed to run sudo less. A local attacker on a specially
configured system could use this to escalate their privilege.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.10:
apport 2.23.1-0ubuntu3.2

Ubuntu 22.04 LTS:
apport 2.20.11-0ubuntu82.4

Ubuntu 20.04 LTS:
apport 2.20.11-0ubuntu27.26

Ubuntu 18.04 LTS:
apport 2.20.9-0ubuntu7.29

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6018-1
CVE-2023-1326, https://launchpad.net/bugs/2016023

Package Information:
https://launchpad.net/ubuntu/+source/apport/2.23.1-0ubuntu3.2
https://launchpad.net/ubuntu/+source/apport/2.20.11-0ubuntu82.4
https://launchpad.net/ubuntu/+source/apport/2.20.11-0ubuntu27.26
https://launchpad.net/ubuntu/+source/apport/2.20.9-0ubuntu7.29

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